Abstract:

Abstract: Test of spraying NASEO3 on winter wheat was carried out on alluvial soil in east of Henan province,the results are as follows, sodium selenite could improve wheat yield signifcantly and has a significant economic impact, spraying NASEO3 can improve wheat yield 1691.4~2443.2kg?hm-2 compared with water spraying only,the improve rate is 13.6~15.2%,and can improve wheat se 0.07-0.14 Se?ugkg-1compared with water spraying only,the improve rate is 124.1-148.3% net income per hectare is 2653.2 yuan ~ 3820.8 yuan.